MacDougall, Frances
Bulfinch Press, 2003
Buku Teks
Miller, Marry C., author
Wiley, 1997
Buku Teks
Sawahata, Lesa, author
Rockport, 2001
Buku Teks
Marberry, Sara O., 1959-, author
Van Nonstrand Reinhold, 1994
Buku Teks
Pile, John F., author
McGraw-Hill, 1997
Buku Teks